IDAHO (PT)

Wild Kratts"Neck and Neck"
As Chris and Martin search for the answer to why giraffes have long necks, a mischievous giraffe begins secretly taking Creature Power Suit parts and supplies from the Tortuga. D

3:30 pm

Cyberchase"Designing Mr. Perfect"
Frustrated that she can't find Mr. Perfect, The Wicked Witch sets out to design him, by turning a frog into her Prince Charming. Unknowingly, however, Wicked captures and transforms Digit instead of a frog. Her sympathetic wand, Wanda (Danica McKellar), secretly alerts the CyberSquad who jump into action. D

4:00 pm

Fetch! With Ruff Ruffman"Go Belugas Go!"
FETCH! competes with Go Get It!, the rival cat game show, in a synchronized swimming match, so he sends Marco, Shreya, and Rubye to learn about synchronized swimming, and he sends Marc to Mystic Aquarium to learn how beluga whales are adapted for the water. D

4:30 pm

Arthur"The World Record/The Cave"
"The World Record"--Why is Buster walking backwards, and Muffy not talking? They're trying to set world records of course! Everyone tries to go it alone, but Arthur and the gang discover that working together more readily creates success, fun -- and the world's largest pizza! "The Cave"--Stalactites and stalagmites and bats, oh my! Arthur thinks his class trip to the Clark Caves will be really cool. But won't it be, um, dark in there?. D

5:00 pm

The Electric Company"Revenge of the Zeros"
Upset about their score of zero points in the banana sculpture contest, Danny and Annie decide to ruin Paul the Gorilla's banana festival party that is being held at The Electric Diner. The Electric Company catches on, and does everything they can to stop the pranksters and save the party and preserve Paul's sanity. D

5:30 pm

Nightly Business Report
Office Depot and Office Max could be the next big Wall Street merger. NBR's Suzanne Pratt takes a look at what this year's surge in mergers could mean for the markets. Dell posts better than expected results but profits slide in its latest quarter. D

Chatsworth House
The Duchess presides over the Chatsworth International Horse Trials, 75 fences over a 300-acre course, which in 2011 is an official qualifier for the London Olympics. Then the third annual Chatsworth flower festival, "Florabundance," is complicated by unseasonably warm spring weather and attacks on the plants by the estate's pheasants, rabbits and mice. Both these events provide income to help support the upkeep of the house. Part 2 of 3G

8:00 pm

Billy The Kid: American Experience
This is a story of a child born to impoverished Irish immigrants, who leads a hardscrabble, itinerant life, coming of age in a lawless corner of New Mexico. An Irish immigrant ring controls all money-making endeavors, with the Mexican population frequently cheated out of property. Henry McCarty, known as Billy the Kid, is ensnared in a centuries-old Irish-English conflict on the plains of the Southwest.G

9:00 pm

After Newtown: Guns In America
AFTER NEWTOWN: GUNS IN AMERICA is an unprecedented exploration of America's enduring relationship with firearMs. From the first European settlements in the New World to frontier justice; from 19th-century immigrant riots to gangland violence in the Roaring Twenties; from the Civil War to civil rights, guns have been at center of our national narrative. Americans have relied on guns to sustain communities, challenge authority and keep the peace. Efforts to curtail their distribution and ownership have triggered epic political battles. D

10:00 pm

Frontline"Raising Adam Lanza"
FRONTLINE marks the one-year anniversary of the mass killings at Sandy Hook Elementary School with a reprise of its investigation of the young man behind the rampage and the town he changed forever. Adam Lanza left behind a trail of death and destruction, but little else. He left no known friends, no diary. D